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Alfred Kobsa

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Alfred Kobsa

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Publications by Alfred Kobsa (bibliography)

» 2009 «

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Kobsa, Alfred, Sonawalla, Rahim, Tsudik, Gene, Uzun, Ersin and Wang, Yang (2009): Serial hook-ups: a comparative usability study of secure device pairing methods. In: Proceedings of the 2009 Symposium on Usable Privacy and Security 2009. p. 10. Available online

“Secure Device Pairing is the bootstrapping of secure communication between two previously unassociated devices over a wireless channel. The human-imperceptible nature of wireless communication, lack of any prior security context, and absence of a common trust infrastructure open the door for Man-in-the-Middle (aka Evil Twin) attacks. A number of methods have been proposed to mitigate these attacks, each requiring user assistance in authenticating information exchanged over the wireless channel via some human-perceptible auxiliary channels, e.g., visual, acoustic or tactile. In this paper, we present results of the first comprehensive and comparative study of eleven notable secure device pairing methods. Usability measures include: task performance times, ratings on System Usability Scale (SUS), task completion rates, and perceived security. Study subjects were controlled for age, gender and prior experience with device pairing. We present overall results and identify problematic methods for certain classes of users as well as methods best-suited for various device configurations.”

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» 2008 «

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Nguyen, David H., Kobsa, Alfred and Hayes, Gillian R. (2008): An empirical investigation of concerns of everyday tracking and recording technologies. In: Youn, Hee Yong and Cho, We-Duke (eds.) UbiComp 2008 Ubiquitous Computing - 10th International Conference September 21-24, 2008, Seoul, Korea. pp. 182-191. Available online

» 2007 «

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Vigo, Markel, Kobsa, Alfred, Arrue, Myriam and Abascal, Julio (2007): User-tailored web accessibility evaluations. In: Proceedings of the Eighteenth ACM Conference on Hypertext and Hypermedia 2007. pp. 95-104. Available online

“This paper presents a framework and system to evaluate the accessibility of web pages according to the individual requirements of users with disabilities. These requirements not only consist of users' abilities, but also users' assistive technologies and the delivery context. In order to ascertain interoperability with other software components, user requirements are specified taking advantage of the extensibility of the W3C CC/PP recommendation and other feature-specification vocabularies. An evaluation tool capable of understanding these specifications generates evaluation reports that are tailored to the user's individual needs. Quantitative accessibility measures resulting from personalized evaluation reports can be used to improve the web browsing experience for users with disabilities, such as through adaptive navigation support and by sorting the results of search engines according to users' personal requirements. In addition, developers benefit from personalized evaluations when developing websites for specific audiences.”

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Wang, Yang and Kobsa, Alfred (2007): Respecting Users' Individual Privacy Constraints in Web Personalization. In: Conati, Cristina, McCoy, Kathleen F. and Paliouras, Georgios (eds.) User Modeling 2007 - 11th International Conference - UM 2007 June 25-29, 2007, Corfu, Greece. pp. 157-166. Available online

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Kobsa, Alfred (2007): Privacy-enhanced personalization. In Communications of the ACM, 50 (8) pp. 24-33

» 2005 «

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Patil, Sameer and Kobsa, Alfred (2005): Uncovering privacy attitudes and practices in instant messaging. In: GROUP05: International Conference on Supporting Group Work November 6-9, 2005, Sanibel Island, Florida, USA. pp. 109-112. Available online

“We present an analysis of privacy attitudes and practices in Instant Messaging based on responses to an online questionnaire. On a 7-point Likert scale, the reported concern about IM privacy spanned the whole range, with the average being slightly below \"medium\". Respondents\' justifications for privacy concerns revealed that the main contributing factors were: sensitivity of content, personal disposition towards privacy, understanding of technology, and potential persistence of conversations. Expectations for various categories of contacts differed significantly. Our findings indicate that it may be useful to leverage grouping functionality for privacy management. We also propose making the underlying technology more transparent.”

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Mark, Gloria and Kobsa, Alfred (2005): The Effects of Collaboration and System Transparency on CIVE Usage: An Empirical Study and Model. In Presence: Teleoperators and Virtual Environments, 14 (1) pp. 60-80

» 2004 «

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Ardissono, Liliana, Kobsa, Alfred and Maybury, Mark T. (eds.) (2004): Personalized Digital Television - Targeting Programs to Individual Viewers. Springer-Verlag
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Kobsa, Alfred (2004): User Experiments with Tree Visualization Systems. In: InfoVis 2004 - 10th IEEE Symposium on Information Visualization 10-12 October, 2004, Austin, TX, USA. pp. 9-16. Available online

» 2003 «

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Yimam-Seid, Dawit and Kobsa, Alfred (2003): Expert-Finding Systems for Organizations: Problem and Domain Analysis and the DEMOIR Approach. In Journal of Organizational Computing and Electronic Commerce, 13 (1) pp. 1-24

“Computer systems that augment the process of finding, in an organization or worldwide, the appropriate expert for a given problem are becoming more feasible than ever as a result of the prevalence of corporate intranets and the Internet. In this article, we investigate such systems in 2 parts. First, we explore the expert-finding problem in depth, review and analyze existing systems in this domain, and suggest a domain model that can serve as a framework for design and development decisions. Second, on the basis of our analyses of the problem and solution spaces, we bring to light the gaps that remain to be addressed. Finally, after this two-part investigation, we present our approach, called DEMOIR (dynamic expertise modeling from organizational information resources), which is a modular architecture for expert-finding systems that is based on a centralized expertise-modeling server but also incorporates decentralized components for expertise information gathering and exploitation.”

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Kobsa, Alfred and Fink, Josef (2003): Performance Evaluation of User Modeling Servers under Real-World Workload Conditions. In: Brusilovsky, Peter, Corbett, Albert T. and Rosis, Fiorella De (eds.) User Modeling 2003 - 9th International Conference - UM 2003 June 22-26, 2003, Johnstown, PA, USA. pp. 143-153. Available online

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Grinstein, Georges G., Kobsa, Alfred, Plaisant, Catherine, Shneiderman, Ben and Stasko, John T. (2003): Which Comes First, Utility or Usability?. In: Turk, Greg, Wijk, Jarke J. van and II, Robert J. Moorhead (eds.) 14th IEEE Visualization 2003 Conference VIS 2003 19-24 October, 2003, Seattle, WA, USA. pp. 605-606.

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Gonzalez, Victor M. and Kobsa, Alfred (2003): Benefits of Information Visualization Systems for Administrative Data Analysts. In: Banissi, Ebad, Börner, Katy, Chen, Chaomei, Clapworthy, Gordon, Maple, Carsten, Lobben, Amy, Moore, Christopher J., Roberts, Jonathan C., Ursyn, Anna and Zhang, Jian (eds.) IV 2003 - Seventh International Conference on Information Visualization 16-18 July, 2003, London, UK. pp. 331-337. Available online

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Mark, Gloria, Carpenter, Keri and Kobsa, Alfred (2003): A Model of Synchronous Collaborative Information Visualization. In: Banissi, Ebad, Börner, Katy, Chen, Chaomei, Clapworthy, Gordon, Maple, Carsten, Lobben, Amy, Moore, Christopher J., Roberts, Jonathan C., Ursyn, Anna and Zhang, Jian (eds.) IV 2003 - Seventh International Conference on Information Visualization 16-18 July, 2003, London, UK. pp. 373-383. Available online

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Kobsa, Alfred and Schreck, Jörg (2003): Privacy through pseudonymity in user-adaptive systems. In ACM Trans. Internet Techn., 3 (2) pp. 149-183

» 2002 «

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Kupper, Detlef and Kobsa, Alfred (2002): Generating and presenting user-tailored plans. In: Gil, Yolanda and Leake, David (eds.) International Conference on Intelligent User Interfaces 2002 January 13-16, 2002, San Francisco, California, USA. pp. 198-199. Available online

“The paper describes methods for generating user-tailored advice and for suitably presenting it to users, taking their capabilities and knowledge into account.”

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Mark, Gloria, Kobsa, Alfred and Gonzalez, Victor M. (2002): Do Four Eyes See Better than Two? Collaborative Versus Individual Discovery in Data Visualization Systems. In: IV 2002 2002. pp. 249-. Available online

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Kobsa, Alfred (2002): Personalized hypermedia and international privacy. In Communications of the ACM, 45 (5) pp. 64-67

» 2001 «

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Kobsa, Alfred (2001): Tailoring Privacy to Users' Needs. In: Bauer, Mathias, Gmytrasiewicz, Piotr J. and Vassileva, Julita (eds.) User Modeling 2001 - 8th International Conference - UM 2001 July 13-17, 2001, Sonthofen, Germany. pp. 303-313. Available online

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Küpper, Detlef and Kobsa, Alfred (2001): User-Tailored Plan Presentation. In: Bauer, Mathias, Gmytrasiewicz, Piotr J. and Vassileva, Julita (eds.) User Modeling 2001 - 8th International Conference - UM 2001 July 13-17, 2001, Sonthofen, Germany. pp. 243-246. Available online

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Kobsa, Alfred (2001): An Empirical Comparison of Three Commercial Information Visualization Systems. In: InfoVis 2001 2001. pp. 123-130. Available online

» 1999 «

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Bra, Paul De, Brusilovsky, Peter, Eklund, John, Hall, Wendy and Kobsa, Alfred (1999): Adaptive Hypermedia: Purpose, Methods, and Techniques. In: Hypertext 99 - Proceedings of the Tenth ACM Conference on Hypertext and Hypermedia February 21-25, 1999, Darmstadt, Germany. pp. 199-200. Available online

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Kobsa, Alfred and Stephanidis, Constantine (eds.) Proceedings of the 5th ERCIM Workshop on User Interfaces for All November 28 - December 1, 1999, Dagstuhl, Germany.

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Kobsa, Alfred and Stephanidis, Constantine (1999): "Foreword". In: Kobsa, Alfred and Stephanidis, Constantine (eds.) Proceedings of the 5th ERCIM Workshop on User Interfaces for All November 28 - December 1, 1999, Dagstuhl, Germany. p. 1. Available online

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Haller, Susan, McRoy, Susan and Kobsa, Alfred (eds.) (1999): Computational Models of Mixed-Initiative Interaction. Kluwer Academic Publishers
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» 1998 «

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Fink, Josef, Kobsa, Alfred and Nill, Andreas (1998): Adaptable and adaptive information provision for all users, including disabled and elderly people. In New Review of Hypermedia and Multimedia, 4 pp. 163-188

“Due to the rapidly increasing popularity of the World-Wide Web, hypermedia is going to be the leading online information medium for some years to come and will likely become the standard gateway for citizens to the "information highway". Today, visitors of web sites are generally heterogeneous and have different needs, and this is likely to increase in the future. The aim of the AVANTI project is to cater hypermedia information to these individual needs by adapting the content and the presentation of web pages to each individual user. The special needs of elderly and disabled users are also partly considered. A model of the characteristics of user groups, individual users and usage environments, and a domain model are exploited in the adaptation process. One aim of this research is to verify that adaptation and user modeling techniques that were hithero mostly used for catering interactive software systems to able-bodied users also prove useful for adaptation to users with special needs. Another original aspect is the development of a network-wide user modeling server that can concurrently accommodate the user modeling needs of several applications and several instances of an application within a distributed computing environment.”

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Brusilovsky, Peter, Kobsa, Alfred and Vassileva, Julita (eds.) (1998): Adaptive Hypertext and Hypermedia. Kluwer Academic Publishers
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» 1989 «

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Allgayer, Jurgen, Harbusch, Karin, Kobsa, Alfred, Reddig, Carola, Reithinger, Norbert and Schmauks, Dagmar (1989): XTRA: A Natural-Language Access System to Expert Systems. In International Journal of Man-Machine Studies, 31 (2) pp. 161-195

“The XTRA access system to expert systems is presented which is aimed at rendering the interaction with expert systems easier for inexperienced users. XTRA communicates with the user in a natural language (German), extracts data relevant to the expert system from his/her natural-language input, answers user queries as to terminology and provides user-accommodated natural-language verbalizations of results and explanations provided by the expert system. A number of novel artificial intelligence techniques have been employed in the development of the system, including the combination of natural-language user input and user gestures on the terminal screen, referent identification with the aid of four different knowledge sources, simultaneous communication of the access system with the user and the expert system, fusion of two complementary knowledge bases into a single one, and the design of a natural-language generation component which allows for a controlled interaction between the "what-to-say" and the "how-to-say" parts to yield a more natural output. XTRA is being developed independently of any specific expert system. In its first application the access to an expert system in the income tax domain is being realized.”

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Changes to this page (author)

15 Feb 2010: Enabled abstracts to be shown on Alfred Kobsa's author page.
08 Sep 2009: Author was edited

18 Aug 2009: Author was edited
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28 Apr 2003: Added the author to the bibliography

Publication statistics

Publication period:1989-2009
Publication count:28
Number of co-authors:38

Productive colleagues

Alfred Kobsa's 3 most productive colleagues in number of publications:

Ben Shneiderman:206
Constantine Stephanidis:144
Catherine Plaisant:67

Collaboration count

Number of publications with 3 favourite co-authors:

Gloria Mark:3
Josef Fink:2
Yang Wang:2

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Learn more about Alfred Kobsa:
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Conference Calendar

Mar 16

Science meets Arts: Leading scientists and designers explore the impact of developing technologies on society

Mar 21

WritersUA Conf. for Software User Assistance

Mar 22

Workshop on Pervasive healthcare in the home : Supporting patient motivation and engagement

Mar 13

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Alfred Kobsa

Publications by Alfred Kobsa (bibliography)

» 2009 «

» 2008 «

» 2007 «

» 2005 «

» 2004 «

» 2003 «

» 2002 «

» 2001 «

» 1999 «

» 1998 «

» 1989 «

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